- Tue Mar 06, 2018 2:25 pm
#74417
Personally, I would not use the flash memory but create a stricture in the RAM (ESP has plenty). Ok, there is a risk to loose data in case of crash or such, but often writing to a flash leads to a dead ESP.
- Tue Mar 06, 2018 6:11 pm
#74424
OP said they wanted to buffer up to 1MB data. RAM is the resource on the module in shortest supply. I doubt whether one could buffer much more than 16KB in RAM
I don't think the writing to Flash will be a problem here as a) it is only used to hold data when wifi is down and b) one is not continually writing.
Flash is good for about 10 - 100 thousand writes depending on quality of flash chip.
Also SPIFFS has wear levelling support which means the life can be spread over the Flash.
See viewtopic.php?f=32&t=6109
I don't think the writing to Flash will be a problem here as a) it is only used to hold data when wifi is down and b) one is not continually writing.
Flash is good for about 10 - 100 thousand writes depending on quality of flash chip.
Also SPIFFS has wear levelling support which means the life can be spread over the Flash.
See viewtopic.php?f=32&t=6109
